3+2 face milling many faces.
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    Default 3+2 face milling many faces.

    What's the best way to approach milling faces, approximately 50 of them, in a 3+2 setup in Mastercam? Having a NX background, I have looked thoroughly for an operation setting that automatically sets the tool axis. It's probably right in front of me, but at this point I need a little help lol.


    NX 1996.XXXX
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    Planes
    Plane from solid face. It will put the zero in the center of whatever face you pick, then you can rotate, transform etc from there

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    Are they equally spaced to where you can Transform/Translate the toolpath about an axis?

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    Quote Originally Posted by Mtndew View Post
    Are they equally spaced to where you can Transform/Translate the toolpath about an axis?
    Possibly, great idea, thanks. I need to look at the geometry closer and see what I can do. The part is a large diamond out of acrylic that will be polished to museum quality. I'd still prefer a face milling op that could automatically set the tool axis normal to a face; I have about 50 facets on this part.

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    Create a plane for each face?

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    Quote Originally Posted by Qwan View Post
    Create a plane for each face?
    yes, you'd need a plane for every tool orientation.

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    As stated you should not need a plane for every tool orientation as these are symmetrical.
    You will need to make a plane for the first cut then use the rotate tool to copy the tool path around to the other faces you want to cut.

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    Make a program for one face, retract, rotate 7.2 degrees, repeat 49 times?

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    Quote Originally Posted by Qwan View Post
    I'd still prefer a face milling op that could automatically set the tool axis normal to a face; I have about 50 facets on this part.
    What about Multiaxis parallel or something similar?

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    Quote Originally Posted by CNC_Chip_Thin View Post
    Make a program for one face, retract, rotate 7.2 degrees, repeat 49 times?
    The part is a large diamond out of acrylic that will be polished to museum qualitY, the facets are all over the place. I might be able to create a handful of operations then rotate tem about an axis.

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    here is something I did in SolidWorks\HSMWorks out of aluminum, it is in 2 halves hence the seam.

    this was a 3 Axis Scallop finish pass with a .002 stepover, don't have 4th or 5th axis.
    Attached Thumbnails Attached Thumbnails img_1743.jpg  

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    Quote Originally Posted by len_1962 View Post
    here is something I did in SolidWorks\HSMWorks out of aluminum, it is in 2 halves hence the seam.

    this was a 3 Axis Scallop finish pass with a .002 stepover, don't have 4th or 5th axis.
    Nice work! Creativity to get the job done is paramount!

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    Long story short, not wanting to do any sort of scallop path with small stepovers, my part should be finish cut by face milling.

    So, if the faces are non-uniform with the normals are all over the place, to face mill this part I need to create a plane for every path?

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    Quote Originally Posted by Qwan View Post
    Long story short, not wanting to do any sort of scallop path with small stepovers, my part should be finish cut by face milling.

    So, if the faces are non-uniform with the normals are all over the place, to face mill this part I need to create a plane for every path?
    probably not for every path, depends on the layout of the facets, you should be able to make a path for say the center face, then rotate that about an axis, one for the face above/below it etc, and rotate them.

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    Quote Originally Posted by Qwan View Post
    Long story short, not wanting to do any sort of scallop path with small stepovers, my part should be finish cut by face milling.

    So, if the faces are non-uniform with the normals are all over the place, to face mill this part I need to create a plane for every path?
    Are you able to share the part file? Or at least a dummy part file? Myself or someone else can probably help you out better.

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    Quote Originally Posted by Qwan View Post
    So, if the faces are non-uniform with the normals are all over the place, to face mill this part I need to create a plane for every path?
    It's not as bad as it sounds.

    What do the rest of you reckon this would take, time-wise? A couple hours if he's meticulous?

    OP's been pondering this question for 2 weeks...

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    Quote Originally Posted by Radar987 View Post
    It's not as bad as it sounds.

    What do the rest of you reckon this would take, time-wise? A couple hours if he's meticulous?

    OP's been pondering this question for 2 weeks...
    depending on the size of the ball, i could easily have that programmed in an hour or so in fusion. tool orientation is STUPID simple in fusion.

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    Quote Originally Posted by empwoer View Post
    depending on the size of the ball, i could easily have that programmed in an hour or so in fusion. tool orientation is STUPID simple in fusion.
    And in NX.

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    Or you could hand write a 20 line program that rotates the A and mills every facet at that angle by incrementally rotating B. Sheesh, sometimes CAM isn’t the answer.

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    Quote Originally Posted by Booze Daily View Post
    Or you could hand write a 20 line program that rotates the A and mills every facet at that angle by incrementally rotating B. Sheesh, sometimes CAM isn’t the answer.
    what you're describing would create a cylinder, not a ball. for a ball, one would need to rotate A/B AND C. if you know all the correct angles, sure, go for it. i know i could do it way faster in CAM


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